Scientists say there is no acceptable dose to avoid brain damage. Its use is banned in several European countries. Yet its residues are found in fruit baskets, on dinner plates, and in human urine samples from all over Europe. Now producers are pushing for a renewed EU-approval - perhaps in vain.

By Stéphane Horel and Staffan Dahllöf

The name is chlorpyrifos. Here is why the chemical and its risks are almost unknown to the public.

Chlorpyrifos kills insects on growing vegetables and fruit.

Thomas Backhaus, professor for ecotoxicology and environmental science at the University of Gothenburg, says that the substance took a long time to be recognised as one of the ”nasty” ones.